121265218597502 has 16 divisors (see below), whose sum is σ = 208431736460160. Its totient is φ = 51833681825688.

The previous prime is 121265218597489. The next prime is 121265218597513. The reversal of 121265218597502 is 205795812562121.

121265218597502 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11427173228 + ... + 11427183839.

It is an arithmetic number, because the mean of its divisors is an integer number (13026983528760).

Almost surely, 2^{121265218597502} is an apocalyptic number.

121265218597502 is a deficient number, since it is larger than the sum of its proper divisors (87166517862658).

121265218597502 is a wasteful number, since it uses less digits than its factorization.

121265218597502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22854357455.

The product of its (nonzero) digits is 6048000, while the sum is 56.

The spelling of 121265218597502 in words is "one hundred twenty-one trillion, two hundred sixty-five billion, two hundred eighteen million, five hundred ninety-seven thousand, five hundred two".